Total posts : 45366
OK on using a scope. Not all know the limitations of DVMs thus the mention of this.
All the voltages you reported look OK except for that of the gate of Q3. It appears that no signal is getting into the gate. Since you can hear something on the receiver might mean that the synthesizer is working and you are picking up radiation from this circuit.
Check the connections for L6 and L4. Sometimes, if not properly removed, the enamel insulation will be in the solder joint and prevent contact.
Use the scope to trace the signal back from Q3 gate toward Q6. If the synthesizer is running you should find the RF signal along this path. The signal at Q3 gate should be a RF pulse with several volts positive and about .7 volts negative.
You had previously asked about C16. This is used to adjust the carrier frequency if needed. It doesn’t change it much so if you don’t adjust this the tx. will still work.